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#11
Thank you for the info.Factory unlocked is a term used to describe phones that come from the factory as originally intended (in a SIM unlocked state). This means they have no 'Network Lock'. This is the same term as 'SIM Free'. Both mean the phone will accept ANY SIM from ANY provider. It does not matter that it's a used pre-pay (or PAYG here in the UK).
In short, it will work with your current SIM. I should point out that you may need to get an updated SIM from your provider if you want stuff like 4G connection etc, as your current one may not be capable of this.